HT49C50 データシートの表示（PDF） - Holtek Semiconductor
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HT49C50 Datasheet PDF : 52 Pages
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HT49C50
Absolute Maximum Ratings
Supply Voltage........................VSS-0.3V to 5.5V
Input Voltage .................VSS-0.3V to VDD+0.3V
Storage Temperature.................-50°C to 125°C
Operating Temperature ..............-25°C to 70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-
mum Ratings² may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged expo-
sure to extreme conditions may affect device reliability.
D.C. Characteristics
Ta=25°C
Symbol
Parameter
VDD
IDD1
Operating Voltage
Operating Current
(Crystal OSC)
IDD2
Operating Current (RC OSC)
Test Conditions
VDD
¾
Conditions
¾
3V No load,
5V fSYS=4MHz
3V No load,
5V fSYS=2MHz
Min. Typ. Max. Unit
2.2 ¾ 5.2 V
¾
1
2 mA
¾ 2.5
5 mA
¾ 0.75 1.5 mA
¾ 1.5
3 mA
ISTB1
Standby Current
(RTC Enable, LCD ON)
ISTB2
Standby Current
(RTC Disable, LCD OFF)
3V No load,
5V system halt
3V No load,
5V system halt
¾¾
5 mA
¾ ¾ 10 mA
¾¾
1 mA
¾¾
2 mA
VIL
VIH
VIL1
VIH1
IOL
3V
¾
0
I/O Port Input Low Voltage
5V
¾
0
3V
¾
2.1
I/O Port Input High Voltage
5V
¾
3.5
Input Low Voltage
(RES, INT0, INT1, TMR0, TMR1)
3V
5V
RES=0.5VDD
INT0/1=0.3VDD
TMR0/1=0.3VDD
0
0
Input High Voltage
(RES, INT0, INT1, TMR0, TMR1)
3V
5V
0.8VDD
2.4
4.0
I/O Ports Sink Current
3V
VDD=3V,
VOL=0.3V
1.5
5V
VDD=5V,
VOL=0.5V
4
¾ 0.9 V
¾ 1.5 V
¾
3
V
¾
5
V
¾ 1.5/0.9 V
¾ 2.5/1.5 V
¾
3
V
¾
5
V
2.5 ¾ mA
6
¾ mA
7
August 18, 1999
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